Improvement in earth-augers



"UNITED STATES PATENT OFFICE.

GEORGE Cr. COLLINS, Ol PHILO, ILLINOIS,'ASSIGNOR OF ONE-HALF HIS RIGHTTO OLIVER WOOD, OF SAME PLACE.

IMPROVEMENT lNEARTH-AUGERS.

Specication forming part of Letters Patent No. 153,807, dated August 4,1874; application iiled April 29, 1874.

To all whom A'it may concern Be it known that I, GEORGE G. GoLLINs, ofPhilo, Champaign county, Illinois, have invented certain new and usefulImprovements in Earth-Angers, of which the following is a description,reference being had to the accompanying drawings.

The invention relates to a means of securing the plates of an earthaugerto its shaft; and consists in a hanger, which secures the plates to ashaft having at its lower extremity an armature, to which is fastenedthe bit of an auger, the spiral portion whereof encircles the shaft, andis extensible, by means of the plates and hanger above mentioned.

The object of the invention is to provide a convenient means of securingthe plates forming the extension of an earth auger to its sh aft.

Figure lis an elevation of a device embodyingthe elements of theinvention. Fig. 2 is a bottom view of the same. Fig. 3 is a detachedView` of one of the plates L.

D is a shaft, in the present instance tubular, and provided, near itslower end, with the aperture E, to permit the efflux of Water or liquidmatter, and at its lower extremity with the arms F H, Whichprojectindifferent planes at right angles to each other, and to the axis of theshaft, being united at their bases to a vertical piece which enters andis secured within the shaft below the aperture. The bit I is formed of aplate of metal curving downward and sharpened on its lower edge, whichhas the vertical lateral flange i. It extends upward, curving about theextended axis of the shaft D, and is bolted to the extremities of thearms E H. The remainder of the auger is formed of circular plates L,from the center of which is removed a circular section in diameterslightly exceeding the external diameter of the shaft. The plate is thensevered on one side, one end being drawn up, the other forced down,giving the plate the spiral form shown at Fig. 3. The plate L is placedabout the shaft D, and secured to the bit I by the nuts a and bolts c.Another plate is similarly added above the last, and thus the length ofthe auger increased, as may be desired, the uppermost plate beingattached to the shaft by the hanger M, secured thereto by the bolt Npassing through the shaft, and secured by the nuts h on each side, theholes P to receive the bolts N being placed spirally around the shaft,and also affording an escape for the air as the auger descends. Thelower portion of the hanger M is provided with the flange l, to which issecured, by nuts m and a bolt, n, the upper edge of the uppermost ot'the plates L. The hanger M is removed and secured in a higher positionas each plate is added in extending the auger.

Having thus described my invention, Wh at I claim as new, and desire tosecure by Letters Patent, is p rEhe combination of the plates L andhanger M, substantially as set forth.

In testimony that I claim the foregoing improvements in earth angers, asabove described, I have hereunto set my hand and seal this 22d day ofApril, 1874. GEORGE G. COLLINS.

Witnesses:

BYRON MGGONIGLE, SOLOMON CARTER.

